From: Mikko Rasa <tdb@tdb.fi>
Date: Mon, 19 Apr 2021 08:29:03 +0000 (+0300)
Subject: Export shadow settings from Blender
X-Git-Url: http://git.tdb.fi/?p=libs%2Fgl.git;a=commitdiff_plain;h=03b21dc33ad615efa26849323a2018dd989218c3

Export shadow settings from Blender
---

diff --git a/blender/io_mspgl/export_material.py b/blender/io_mspgl/export_material.py
index bf7e2b3f..97bb8e9e 100644
--- a/blender/io_mspgl/export_material.py
+++ b/blender/io_mspgl/export_material.py
@@ -21,9 +21,16 @@ def create_technique_resource(material, resources):
 			for u in material.uniforms:
 				ss.sub.append(Statement("uniform", u.name, *u.values[:u.size]))
 			st.sub.append(ss)
+	elif material.receive_shadows:
+		st.sub.append(Statement("receive_shadows", True))
 
 	tech_res.statements.append(st)
 
+	if material.shadow_method!='NONE':
+		st = Statement("pass", "shadow")
+		st.sub.append(Statement("shader", "_occluder.glsl.shader"))
+		tech_res.statements.append(st)
+
 	return tech_res
 
 class MaterialExporter:
diff --git a/blender/io_mspgl/material.py b/blender/io_mspgl/material.py
index ba5fc3e2..2613edac 100644
--- a/blender/io_mspgl/material.py
+++ b/blender/io_mspgl/material.py
@@ -96,6 +96,8 @@ class Material:
 		self.render_mode = material.render_mode
 		self.technique = material.technique
 		self.shader = material.shader
+		self.receive_shadows = material.receive_shadows
+		self.cast_shadows = (material.shadow_method!='NONE')
 
 		if self.render_mode=='EXTERNAL' and not self.technique:
 			raise Exception("Invalid configuration on material {}: No technique for external rendering".format(self.name))
@@ -171,6 +173,8 @@ class MaterialAtlas:
 			self.name = "material_atlas_"+os.path.splitext(self.shader)[0]
 		else:
 			self.name = "material_atlas"
+		self.receive_shadows = materials[0].receive_shadows
+		self.cast_shadows = (materials[0].shadow_method!='NONE')
 		self.materials = materials
 		self.material_names = [m.name for m in self.materials]
 		for m in self.materials:
@@ -178,6 +182,8 @@ class MaterialAtlas:
 				raise Exception("Conflicting render modes in MaterialAtlas constructor")
 			if self.render_mode=='CUSTOM' and m.shader!=self.shader:
 				raise Exception("Conflicting shaders in MaterialAtlas constructor")
+			if m.receive_shadows!=self.receive_shadows or m.shadow_method!=materials[0].shadow_method:
+				raise Exception("Conflicting shadow settings in MaterialAtlas constructor")
 
 		count = len(self.materials)
 		size = 1
diff --git a/blender/io_mspgl/properties.py b/blender/io_mspgl/properties.py
index 7fad772b..0648946e 100644
--- a/blender/io_mspgl/properties.py
+++ b/blender/io_mspgl/properties.py
@@ -88,6 +88,8 @@ class MspGLMaterialProperties(bpy.types.Panel):
 		elif mat.render_mode=='EXTERNAL':
 			self.layout.prop(mat, "technique")
 		self.layout.prop(mat, "array_atlas")
+		if mat.render_mode=='BUILTIN':
+			self.layout.prop(mat, "receive_shadows")
 		if mat.array_atlas:
 			self.layout.prop(mat, "array_layer")
 		if mat.render_mode!='EXTERNAL':
@@ -223,6 +225,7 @@ def register_properties():
 			("EXTERNAL", "External technique", "Use an externally defined technique")))
 	bpy.types.Material.technique = bpy.props.StringProperty(name="Custom technique", description="Name of an external technique to use for rendering")
 	bpy.types.Material.shader = bpy.props.StringProperty(name="Custom shader", description="Name of an external technique to use for rendering")
+	bpy.types.Material.receive_shadows = bpy.props.BoolProperty(name="Receive shadows", description="Receive shadows from a shadow map", default=True)
 	bpy.types.Material.array_atlas = bpy.props.BoolProperty(name="Texture array atlas", description="The material is stored in a texture array")
 	bpy.types.Material.array_layer = bpy.props.IntProperty("Texture array layer", description="Layer of the texture array atlas to use")
 	bpy.types.Material.material_atlas = bpy.props.BoolProperty(name="Material atlas", description="Make this material part of a material atlas")